Book-mark.



No. 738,376. PATENTED SEPT. '8, 1903. J. L. THOMPSON.

BOOK MARK.

APPLICATION FILED SEPT. 3, 1902.

1Y0 MODEL.

WITNESSES l/VVE/VTOI? ATTORNEYS Patented September 8, 1901 3.

PATENT OFFICE.

JOHN L. THOMPSON, OF NEW YORK, N. Y.

BOOK-MARK.

:ZPECIFICATION forming part of Letters Patent No. 738,376, datedSeptember 8, 1903.

Application filed $eptember 3, 1902. Serial No. 121,942. (No model.)

To all whom it may concern:

Be it known that 1, JOHN L. THOMPSON, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain newand useful Improvements in Book'Markspf whichthe following is a full and complete specification, such as will enablethose skilled in the art to which it appertains to make and use thesame.

The object of this invention is to provide an improved book-mark whichmay be detachably connected with the back of a book and convenientlyretained inplace for use and by means of which any page of a bookcontaining any number of pages may be easily and conveniently marked forreference at any time.

The invention is fully disclosedin the following specification, of whichthe accompanying drawings form a part, in which the separate parts ofmyimprovement are designated by suitable reference characters in each ofthe views, and in which-- Figure 1 is a perspective view of a book withone side of the cover open and with my improved mark connectedtherewith; Fig. 2, a transverse section of the bookmark onthe line 2 2of Fig. 1, and Fig. 3 a back-view of a portion of the book-mark.

In the drawings forming part of this specification I have shown a bookwith one side of the cover open, as shown at a, and in the practice ofmy invention I provide a book-mark comprising a plate 1'), composed ofcardboard, celluloid, aluminium, or any suitable material, and which isshown in the drawingsas rectangular in form,.but may be round or of anyother desired shape. The plate I) is preferably composed of two parts, aback portion b and a front portion b having a circular central opening band around the circular opening b are arranged in four separate seriesthe numerals from 1 to 9 and the character 0, said separate series ofnumerals each occupying one-quarter of the space around the opening 5Pivoted centrally of the plate 19*, as shown at c, are four pointers d,and the ends of these pointers are preferably pointed and extend beneaththe inner edge of the plate 5 which is raised, as shown at b in Fig. 2,for this purpose, and the object of this construction is to prevent theaccidental and too free turning of said pointers, the passing of thepoints of said pointers under the inner edge of the plate b at 11serving to produce an amount of friction which will hold said pointersagainst accidental turning. As thus constructed it will be seen that anypage of the book may be easily marked, all that is necessary being toturn the pointers, which is done by hand, so as to indicate the requirednumerals, and by means of a book-mark constructed .as herein describedany page from 1 to 9999 may be marked.

It will be apparent that my improved bookmark or the constructionthereof is not limited to the exact numerals arranged in the separateseries; nor is four series of numerals necessary, as a less number ofsaid numerals may be employed and also a less number of series; nor ismy invention limited to the use of four pointers, as four pointers andfour series of numerals are only necessary when the pages of the bookare one thousand or over.

In the form of construction shown I connect with the back of the plateI) or of the supplemental plate 1) slides c, this connection being madeby means of keepers, and these slides are provided at their ends withlugs 6 which are adapted to engage the upper and lower edges of thecover a, and by means of this construction the book-mark may be quicklyand easily connected with the back of the book, the slides e being heldagainst too free amovement by friction. It will be apparent, however,that elastic bands or any suitable means may be employed for connectingthe book-mark with the back or cover of the book.

Having fully described my invention, what Iclaim as new, and desire tosecure by Letters Patent, is- 1 1. A book-mark composed of front andback parts, the front part being provided with a central opening aroundwhich are arranged in a circle a plurality of series of numerals,

extend beneath the front part at the perimeter of said opening,substantially as shown and described.

2. A book-mark composed of front and back parts, the front part beingprovided with a central opening around which are arranged in a circle aplurality of series of numerals and a number of pointers pivoted to theback part at the center of said opening and adapted to operate inconnection with said series of numerals, the back part being alsoprovided with keepers and oppositely-movable slides mounted thereinwhereby the mark may be connected with the back of a book, substantiallyas shown and described.

3. A book-mark comprising a plate composed of two separate members, thefront member being provided with a central opening around which arearranged a plurality of series of numerals beginning with the nu meral 1and pointers pivoted to the back plate at the center of said opening,said pointers being provided with pointed ends which project beneath thesupplemental plate, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of the subscribing-"witnesses, this 30th day ofAugust, 1902.

JOHN L. THOMPSON.

Witnesses:

T. A. STEWART, O. E. MULREANY.

